Jaylen Brown agrees to supermax extension with Boston Celtics

Jaylen Brown has made five trips to the Eastern Conference finals since the Boston Celtics selected him with the No. 3 overall pick in the 2016 NBA draft. (Maddie Meyer/Getty Images)Two-time All-Star wing Jaylen Brown has agreed to a five-year, $304 million supermax contract extension with the Boston Celtics, making him the highest-paid player in NBA history, his agent, Jason Glushon of Glushon Sports Management, confirmed to Yahoo Sports. ESPN's Marc J. Spears first reported the deal.

The contract is fully guaranteed. There is no player option for the final year of Brown's deal in 2028-29. The contract includes a trade kicker that would increase Brown's salary even further if he is dealt at…